如何解决此错误转义闭包捕获了变异的“ self”参数

问题描述

我在这里理解了解释，但是如何用另一种方法解决呢？ Swift 5 : What's 'Escaping closure captures mutating 'self' parameter' and how to fix it

包裹提供商

class PackageProvider: PackageProviderProtocol {
    func getAllPackage(completion: @escaping ([Package]) -> ()) {
        
        guard let url = Bundle.main.url(forResource: "packageList",withExtension: "json") else { return }

        AF.request(url,method: .get,parameters: nil,encoding: URLEncoding.default,headers: nil,interceptor: nil,requestModifier: nil).response { (responseData) in

            guard let data = responseData.data else { return }

            if let package = self.jsonDictionary(from: data)?["packages"]{
                do {

                    let data = try JSONSerialization.data(withJSONObject: package,options: .fragmentsAllowed)
                    let packages = try JSONDecoder().decode([Package].self,from: data)
                    completion(packages)


                } catch let error {
                    print(error)
                }
            }
        }
    }
}

包装提供商协议

protocol PackageProviderProtocol {

    func getAllPackage(completion: @escaping ([Package]) ->())
}

打包视图模型

struct Packageviewmodel {
    
    private var packageProvider: PackageProviderProtocol!
    public var allPackages = [Package]()
    public var favPackages = [Package]()
    public var selectedPackage = Package()
    public var favButtonIsActive = true
    
    var packageviewmodel: Any?
    
    init() {
        self.packageProvider.getAllPackage { (packageResult) in
            self.allPackages = packageResult // Error: Escaping closure captures mutating 'self' parameter
        }
    }
}

解决方法

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